Classical Physics

Work and Kinetic Energy

We point to a problem with the current generally accepted idea that work W = ∫ F⋅dx transfers kinetic
energy KE = (1/2)mv2, showing that with exactly the same amount of work, done through a pulley or a
lever, different amounts of kinetic energy can be imparted to objects of different masses. We do this
without violating the laws of classical mechanics, or the work-kinetic energy theorem W = ΔKE.

Submission history

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